Journal of Conservative Dentistry
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Year : 2014  |  Volume : 17  |  Issue : 3  |  Page : 255-260

Influence of cement type and thickness on polyfiber post adhesion

1 Department of Endodontics, Faculty of Dentistry, Hacettepe University, Sihhiye 06100, Ankara, Turkey
2 Department of Endodontics, Bulent Ecevit University, Zonguldak, Turkey

Correspondence Address:
Emel Uzunoglu
Department of Endodontics, Faculty of Dentistry, Hacettepe University, Sihhiye 06100, Ankara
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0707.131789

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Introduction: To evaluate the effect of two different post space diameters and related resin cement film thicknesses on the bond strength of a polyfiber post. Materials and Methods: A total of 48 premolars were randomly divided into two according to the post space diameter: 1.1 mm and 1.5 mm. Then each group was divided into three sub-groups according to luting cement used: RelyX U100, Panavia F2.0/ED primer, Clearfil SA cement. Spirapost was then luted into the canal using luting cements. Two slices were obtained from each root specimen. Push-out tests were performed. Data was analyzed with Kruskal-Wallis and Connover post-hoc and Mann-Whitney U-test (P < 0.05). Results: Push-out bond strength was found to vary significantly according to type of adhesive system and post space diameter size (P < 0.05). The self-adhesive resin cement RelyX U100 had significantly higher bond strengths compared with the other adhesive system (P < 0.05). The self-etch adhesive system (Panavia F2.0) showed significantly lower bond strengths compared with the other systems (P < 0.05). There was a significant interaction between the luting systems and post space diameter (P < 0.05). Conclusion: The increases in post space diameter significantly reduced the bond strength of Spirapost to root dentine for both groups.

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